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简要介绍了计算机硬盘的工作原理和技术发展趋势,指出了目前以脂润滑深沟球轴承为支承的硬盘主轴系统在不可重复误差、结构尺寸、寿命和噪声方面存在的问题制约了硬盘技术性能的进一步提高,重点讨论了有可能取代球轴承成为未来硬盘主轴支承的空气轴承、脂润滑轴承、磁流体轴承及油润滑轴承的各自优势及需要克服的问题。
The operating principle and technical development trend of computer hard disk are introduced briefly. The problems of non-repeatable error, structure size, life expectancy and noise of hard disk spindle system supported by grease-lubricated deep groove ball bearing are pointed out, which restrict the technical performance of hard disk To further improve, focusing on the possibility of replacing the ball bearings to become the future of the hard disk spindle bearings air bearing, grease lubricated bearings, magnetic fluid bearings and oil lubrication of the respective advantages and the need to overcome the problem.